最好的版本。有生词和汉译。
crowd out vt. 挤出;推开
hardy ['hɑ:di] adj. 坚强的;勇敢的;能吃苦耐劳的;鲁莽的
host [h ust] n. [计] 主机;主人;主持人;许多 vt. 主持;当主人招待 vi. 群集;做主人
insect ['insekt] n. 昆虫;卑鄙的人
pest [pest] n. 害虫;有害之物;讨厌的人
***花通常令人生厌,它挤走不那么顽强的植物,并找来很多害虫。
73. Starting around 7000 B.C., and for the next four thousand years, much of the Northern Hemisphere experienced temperatures warmer than at present.
hemisphere ['hemi,sfi ] n. 半球
大约从公元前七千年开始,在四千年当中,北半球的温度比现在高。
74. When Henry Ford first sought financial backing for making cars, the very notion of farmers and clerks owning automobiles was considered ridiculous.
seek [si:k] [sought ,sought, seeking ] vt. 寻求;寻找;探索;搜索 vi. 寻找;探索;搜索
notion ['n u n] n. 概念;见解;打算
clerk [klɑ:k, kl :k] n. 职员,办事员;店员;书记;记帐员
ridiculous [ri'dikjul s] adj. 可笑的;荒谬的
当亨利.福特最初制造汽车为寻求资金支持时,农民和一般职员也能拥有汽车的想法被认为是可笑的。
75. Though once quite large, the population of the bald eagle across North America has drastically declined in the past forty years.
bald [b :ld] adj. 秃顶的;光秃的;单调的;无装饰的
drastically ['dræstik li] adv. 彻底地;激烈地
decline [di'klain] n. 下降;衰退;斜面 vi. 下降;衰落;谢绝 vt. 谢绝;婉拒
北美秃头鹰的数量一度很多,但在近四十年中全北美的秃头鹰数量急剧下降。
76. The beaver chews down trees to get food and material with which to build its home.
beaver ['bi:v ] n. 海狸;海狸皮毛
chew [t u:] n. 咀嚼;咀嚼物 vt. 嚼碎,咀嚼 vi. 细想,深思
水獭啃倒树木,以便取食物并获得造窝的材料。
77. Poodles were once used as retrievers in duck hunting, but the American Kennel Club does not consider them sporting dogs because they are now primarily kept as pets.
poodle ['pu:dl] n. 狮子狗
retriever [ri'tri:v ] n. (训练成能寻回猎物的)猎犬;取回的人
kennel ['ken l] n. 狗屋;养狗场
primarily ['praim r li] adv. 首先;主要地,根本上
pet [pet] n. 宠物;生气;受宠爱的人
长卷毛狗曾被用作猎鸭时叼回猎物的猎犬,但是美国Kennel Club却不承认它们为猎犬,因为它们现在大多数作为宠物饲养。
78. As a result of what is now know in physics and chemistry, scientists have been able to make important discoveries in biology and medicine.
physics ['fiziks] n. 物理学;物理现象
chemistry ['kemistri] n. 化学;化学过程
biology [bai' l d i] n.生物;生物学